[Offline Pages] Add a GCMAppHandler for offline page prefetch.

chrome/test/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3380 matching lines @@
     data += [ "$root_out_dir/Chromium Framework.framework/" ]
   }
 
   if (is_android) {
     sources += [
       # Offline pages are currently only on Android.
       "../browser/android/offline_pages/background_loader_offliner_unittest.cc",
       "../browser/android/offline_pages/offline_page_mhtml_archiver_unittest.cc",
       "../browser/android/offline_pages/offline_page_request_job_unittest.cc",
       "../browser/android/offline_pages/offline_page_utils_unittest.cc",
+      "../browser/android/offline_pages/prefetch/suggested_articles_observer_unittest.cc",
       "../browser/android/offline_pages/prerender_adapter_unittest.cc",
       "../browser/android/offline_pages/prerendering_loader_unittest.cc",
       "../browser/android/offline_pages/prerendering_offliner_unittest.cc",
       "../browser/android/offline_pages/recent_tab_helper_unittest.cc",
       "../browser/android/offline_pages/test_offline_page_model_builder.cc",
       "../browser/android/offline_pages/test_offline_page_model_builder.h",
       "../browser/android/offline_pages/test_request_coordinator_builder.cc",
       "../browser/android/offline_pages/test_request_coordinator_builder.h",
       "../browser/android/search_geolocation/search_geolocation_service_unittest.cc",
       "../browser/autofill/autofill_credit_card_filling_infobar_delegate_mobile_unittest.cc",
@@ skipping 1618 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }